It’s so wild how many grown adults can’t grasp such a basic concept like “if you are nicer to strangers they will usually be nicer to you in return”
I work a job where I interact with the public. If my customers are nice and pleasant I will bend over backwards for them. If my customers are unpleasant I will do the absolute minimum as required to not get in trouble. I’ll never not do my job, but by god I can and will do the bare minimum.